ALBERT

Description: 〈p〉Publication date: January 2020〈/p〉 〈p〉〈b〉Source:〈/b〉 Heliyon, Volume 6, Issue 1〈/p〉 〈p〉Author(s): Sharifah Farhana Syed-Ab-Rahman, Lilia Costa Carvalhais, Dzolkhifli Omar〈/p〉 〈div xml:lang="en"〉 〈h5〉Abstract〈/h5〉 〈div〉〈p〉Bacterial leaf blight (BLB) and sheath brown rot (SBR), caused by 〈em〉Xanthomonas oryzae〈/em〉 pv. 〈em〉oryzae〈/em〉 (Xoo) and 〈em〉Pseudomonas fuscovaginae〈/em〉, respectively, are bacterial diseases that lead to substantial yield losses in rice. Natural plant-based products represent a sustainable alternative to combat bacterial diseases due to their biodegradability and overall safety. However efficient ways of delivering them are crucial to their success. In an attempt to maximize the antibacterial properties of botanical bactericides for the control of these pathogens, this study evaluated the efficiency of different emulsion formulations of 〈em〉Piper sarmentosum〈/em〉 extracts. The emulsion formulations were demonstrated to be effective in controlling BLB and SBR of rice in 〈em〉in vitro〈/em〉 plate assays and 〈em〉in planta〈/em〉 under glasshouse conditions. The observed 〈em〉in vitro〈/em〉 inhibition of the bacterial pathogens and significant disease suppression 〈em〉in planta〈/em〉 indicate that these plant extract formulations represent promising alternatives to be adopted in management strategies for controlling rice diseases.〈/p〉〈/div〉 〈/div〉